Muhammad M.

I design and build the backend systems businesses actually run on — REST APIs, financial workflows, ERP and inventory modules — in .NET Core, C# and Python. I've delivered 15+ software architecture and system design projects here on Upwork, every one completed with a 5-star review. My day-to-day is production backend engineering. I currently work as a .NET and AI engineer at a financial media company, building APIs, business logic and AI integrations for financial systems. I've also delivered a full-stack banking application for a financial institution in Bahrain, an asset management system built end to end, and an automated evaluation platform that tests an AI chatbot for response accuracy, tool correctness and latency. WHAT I BUILD Backend & APIs - REST API development in .NET Core, C#, ASP.NET Core, Python and FastAPI - Clean Architecture, SOLID, dependency injection, background services - Authentication and authorization (JWT, role-based access) - Entity Framework Core, LINQ, async patterns - Third-party API integrations Architecture & System Design - UML diagrams, ERDs, sequence and class diagrams - Service boundaries, data modelling and scalable system design - SRS and technical documentation - Reviewing and improving existing architectures Databases - SQL Server and PostgreSQL - Schema design, indexing and query optimization AI-Integrated Backends - LLM application development, AI agents and tool calling - RAG systems and document processing - Amazon Bedrock and Claude integrations - LLM evaluation and AI QA automation CREDENTIALS BS Software Engineering, FAST National University AWS Certified AI Practitioner Microsoft Certified: GitHub Foundations I work best on projects where someone needs the system thought through, not just the tickets closed. Send me the problem and I'll tell you how I'd approach it.